Features: Good electrical conductivity and thermal conductivity. 570pcs solid copper sump plug washer set for multiple choices. All contained in a compact and see through compartmented plastic case. Great for sump plugs, water, fuel and hydraulic fittings. A sump plug washer set to suit all types of engines be it Car, Marine, Generators, Machinery and Plant. Specifications: Material: Copper Size types: 30 Quantity: 570pcs Box size: Approx. 18 x 27 x 4.5cm / 7.08 x 10.62 x 1.77inch Weight: 744g Washer Size: 40pcs x Copper Washers4*8*1 40pcs x Copper Washers5*9*1 40pcs x Copper Washers6*10*1 40pcs x Copper Washers6*12*1 40pcs x Copper Washers8*12*1 40pcs x Copper Washers8*14*1 40pcs x Copper Washers10*14*1 40pcs x Copper Washers10*16*1 40pcs x Copper Washers12*16*1.5 40pcs x Copper Washers12*18*1.5 40pcs x Copper Washers13*18*1.5 40pcs x Copper Washers14*18*1.5 5pcs x Copper Washers14*20*1.5 5pcs x Copper Washers16*20*1.5 5pcs x Copper Washers17*21*1.5 5pcs x Copper Washers17*23*1.5 5pcs x Copper Washers18*22*1.5 5pcs x Copper Washers18*24*1.5 5pcs x Copper Washers20*24*1.5 5pcs x Copper Washers20*26*1.5 5pcs x Copper Washers21*26*1.5 5pcs x Copper Washers21*28*1.5 5pcs x Copper Washers22*27*1.5 5pcs x Copper Washers22*29*1.5 5pcs x Copper Washers24*30*2 5pcs x Copper Washers26*32*2 5pcs x Copper Washers27*32*2 5pcs x Copper Washers28*34*2 5pcs x Copper Washers30*36*2 5pcs x Copper Washers33*39*2 .